On your own paper, write a fraction with numerator 2x + -4 and denominator 5x+ 7. Write a second fraction with numerator -1x + -2 and denominator 2x + 3. Subtract the second fraction from the first fraction and write the answer in simplest form with numerator ax^2 +bx + c and denominator dx^2 +ex + f. Find the sum of a, b, c, d, e, and f, and type your answer rounded to the nearest whole number.